Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Serious Boot Catastrophe

06 Feb 2014   #21

Windows 7 Ultimate x64

Quote   Quote: Originally Posted by gregrocker View Post
What were the infection boot scan results which as explained are where you should start?
I am currently scanning with MSE and MBAM using a Win7 laptop with boot drive attached as slave. Will post screenshots when done, although I'm saying this again the drive is clean and this is a colossal waste of time.

Can we see a picture of the PW drive map? Attach using paper clip in reply box.

Where is the Active flag now? Did you run Startup Repair - Run 3 Separate Times no matter what it reports?
It is on the 100MB System Reserved partition. Setting it on any other partition (including C) will result in BOOTMGR not found error message.

After clicking "repair my computer" in RE, occasionally there will be an automatic prompt to fix startup issues and reboot. This doesn't work. Starting Startup Repair manually never works, returns an error "Startup Repair was not able to repair this computer".

What was the result of System Restore run from System Recovery Options?
Try it again.
Two restore points from December are found and affected programs list loads, but proceeding will return an error along the lines of drive not found. System restore image exists on a secondary drive which I re-connected temporarily but non show up in the recovery menu.

My System SpecsSystem Spec
06 Feb 2014   #22

Windows 7 Ultimate x64

A member from another forum has suggested these steps:
How to restore the system/boot drive letter in Windows

This implies a problem with drive letters (at last check RE reports my Windows installation was on G). Since I cannot reach the desktop the specific steps outlines above are not applicable but would it be possible to manually force new drive letter assignments from the command prompt or EasyRE liveUSB?

From MS technet:
You cannot assign drive letters to system volumes, boot volumes, or volumes that contain the paging file. You cannot assign a drive letter to an OEM partition or any GPT partition other than a basic data partition.
My System SpecsSystem Spec
06 Feb 2014   #23
Microsoft MVP


Your System REserved partition lacks the Boot flag (aka System in Disk Mgmt) which means it is not booting Win7, and requires repair untli it shows up.

We also cannot see the other drives to know if another drive further down is booting Disk0. Disk 3 is cut off just as it says "Rese--" which makes me wonder if it may be booting an EFI System.

Drive letters are not shown in PW and are often different in WinRE. What makes you think the issue is drive letter?

You can never rule out infection without at least one full boot scan since the OS may not repair if infected.
My System SpecsSystem Spec

06 Feb 2014   #24

Windows 7 Ultimate x64

Hi Greg, very pleased to hear from you.

How should I go about putting the "boot flag" back onto my System Reserved partition?

Would you like me to boot up Partition Wizard again and take a picture with the window maximized?

I don't know if drive letters are the problem, merely wondering if they could have anything to do with my situation.

The MBAM and MSE scans are still running but are around 90% and should be finishing within the next half hour.

I'll refresh this page every 5 minutes. Thank you for your help. I have a 3D project that a client needs by Monday so this is particularly bad timing.

My System SpecsSystem Spec
06 Feb 2014   #25
Microsoft MVP


If Disk0 is the only OS hard drive then it is an MBR install, so you should be booting the Win7 installation Media or System Repair Disk as a Legacy device and not UEFI. Additionally in BIOS setup there should be enabled either Legacy BIOS or Compatibility Support Module (CSM). Enter BIOS setup now by pressing the key given on first boot screen to report back what these settings are.

To repair Win7 if it is the only OS on the PC, unplug all other HD's, boot disk as Legacy (not UEFI) device, then run Startup Repair - Run 3 Separate Times until Win7 starts.

If it won't start after you've confirmed the BIOS settings as given above, and run the three full Startup Repairs with reboots, then work through the steps for Troubleshooting Windows 7 Failure to Start which attempts everything that can be done up to rescuiing your files to do a perfect reinstall. If this is your production machine then you should have a backup image to apply.

We should see the other HD's to know they don't have conflicting settings. When you plug them back in after Win7 is repaired make sure the Win7 HD remains set first to boot in BIOS.
My System SpecsSystem Spec
07 Feb 2014   #26

Windows 7 Ultimate x64

Hi Greg, MSE finished awhile back but MBAM is still going so I'll just post this here first.

Once that's done I'll put the drive back into the big computer. Yes, this is a single-boot scenario and there is only one OS hard drive.

BIOS settings as follows:
HPET: enabled
Legacy USB: enabled
PCI ROM priority: Legacy ROM

Would you like me to boot up Partition Wizard and take a larger screenshot to see the other HDs?
My System SpecsSystem Spec
07 Feb 2014   #27
Microsoft MVP


The UEFI choices are normally Legacy BIOS (different from USB) and/or Compatibility Support Mode (CSM). These need to be enabled for Legacy MBR install such as you have.

Watch this video to understand UEFI BIOS vs. Legacy BIOS - YouTube.

Yes it would be good to see all HD's listings.
My System SpecsSystem Spec
07 Feb 2014   #28

Windows 7 Ultimate x64

I did abit of googling, "PCI ROM priority: Legacy ROM" is the one for this motherboard. The following as requested:

There was a second active partition which I did not spot previously, used PW to mark it as inactive and applied the changes. This didn't change anything; still not able to start Windows.

I also tried the "set as Windows boot" function on both System Reserved and C:

but both returned this error

I also tried selecting the boot drive and "Rebuild MBR" function. This also did not work.

Right now what I'm observing is Windows consistently failing right after the logo animation starts. It might not be an issue with the bootloader or boot sector any more but a problem with Windows itself, since we're past booting/BIOS and starting to load Windows.

If this were XP all I'd do is simply perform an in-place repair install from RE and that'd be the end of it. However Windows 7 only allows repair install (upgrade mode) from desktop and not RE/WinPE. Is there a way to force Windows to allow repair install from the bootable flash drive?

Or, from another perspective, would it be possible to perform a repair install or overwrite of the Windows files when connected as a slave via SATA>USB on another Windows 7 computer?
My System SpecsSystem Spec
07 Feb 2014   #29

Windows 7 Ultimate x64

Something I haven't tried before, hitting F8 and selecting "Disable automatic restart on system failure" and got this:

Technical information:
*** STOP: 0X0000007B (0XFFFF880009A98E8, 0XFFFFFFFFC000034, 0X000...000, 0X000...000)

Might be something to work with?
My System SpecsSystem Spec
07 Feb 2014   #30

Windows 7 Ultimate x64

I'm now at the Startup Repair x3 part. On all 3 tries the result this time was:

"Restart your computer to complete the repairs."

Under diagnosis and repair details:
Root cause found: The partition table doe not have a valid System Partition.
Repair action: Partition table repair
Result: Completed successfully. Error code = 0x0
The exact same thing happens all 3 times, after which I am still unable to get past the Windows startup logo animation. On all 3 tries, nothing is shown in the list of Windows installations as well.
My System SpecsSystem Spec

 Serious Boot Catastrophe

Thread Tools

Similar help and support threads
Thread Forum
Dual Boot: Win7: Boot Manager Status: 0xc000000f boot selection failed
Hello, I have dual boot in my laptop with Ubuntnu 14.04 LTS and Windows 7 Home Premium 64 bit. Today after working on Ubuntu I restarted and switched to Windows and as soon as it logged in I noticed the battery was 0%. I thought maybe it was some kind of glitch or something (silly me!) so I just...
General Discussion
Boot Freezes - Can only boot using Hirens Boot CD
I can only boot my machine using Hirens Boot off the hard drive. I have included 2 videos showing the issues. It loads to a Windows 7 screen but the ms colored flies / windows animation never loads. It freezes there. I've run the Windows 7 "upgrade" to resinstall install Windows 7. I didn't...
Installation & Setup
Boot Priority & Boot Device Control for New SSD as boot drive
After reading through lots and lots of posts and tutorials, I'm still a little confused. I worked for a carpenter one summer when I was a kid and he stressed the philosophy of measuring twice and cutting once as a rule to live by. So, before I fire up my saw, I thought I would seek a little...
Installation & Setup
Can't boot, boot into safe mode or boot from dvd
So I have been trying to get my computer running for a few days now. At first it wasn't booting at all, it would be a black screen with a blinking cursor. I have cleared cmos a few times, turned psu off, drained charge from psu, turned psu back on and got it working that way for about 10 minutes,...
General Discussion
Start Menu Order + Catastrophe
Hello, I need help with my start menu order. In the Taskbar and Start Menu Items dialogue under Customize Start Menu I have *Sort All Menu Items by name* unchecked. Regardless of this, my All Programs start menu will not maintain the order that I choose to put it in. I run the box as an...

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 00:26.
Twitter Facebook Google+